First I agree with your point about impressive spaces but your comment about
pillars made me think of something I had seen awhile ago. I was trying to
find a picture of the inside of a salt mine --I recalled seeing one several
years ago when the local salt mine collapsed; it showed a huge hall of
pillars underground. Instead I stumbled across this one in Poland.
Wowsers -- not exactly pillared halls but fantastic rooms carved out of the
salt. A real life Moria ! All this stuff is carved out of rock
salt. If the pics don't work ( and even if they do these sites are
interesting) go to
Krakow Salt Mine
(look at the photogallery and history pages especially) or Cosmic Ray Experiments
at Mine
******************************************
We who still labour by the cromlech on the shore,
The grey cairn on the hill, when day sinks drowned in dew,
Being weary of the world's empires, bow down to you,
Master of the still stars and the flaming door. --W.B. Yeats